212285449 has 4 divisors (see below), whose sum is σ = 212336964. Its totient is φ = 212233936.

The previous prime is 212285419. The next prime is 212285459. The reversal of 212285449 is 944582212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33582025 + 178703424 = 5795^2 + 13368^2 .

It is a cyclic number.

It is not a de Polignac number, because 212285449 - 2¹³ = 212277257 is a prime.

It is a super-2 number, since 2×212285449² = 90130223714263202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212285419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18982 + ... + 28015.

It is an arithmetic number, because the mean of its divisors is an integer number (53084241).

Almost surely, 2^212285449 is an apocalyptic number.

It is an amenable number.

212285449 is a deficient number, since it is larger than the sum of its proper divisors (51515).

212285449 is an equidigital number, since it uses as much as digits as its factorization.

212285449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51514.

The product of its digits is 46080, while the sum is 37.

The square root of 212285449 is about 14570.0188400702. The cubic root of 212285449 is about 596.5406945999.

It can be divided in two parts, 2122 and 85449, that added together give a triangular number (87571 = T₄₁₈).

The spelling of 212285449 in words is "two hundred twelve million, two hundred eighty-five thousand, four hundred forty-nine".